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How to deal with acidic chemical wastewater

Established in 2001, Puyang Zhong Yuan Restar Petroleum Equipment Co.,Ltd, “RSD” for short, is Henan’s high-tech enterprise with intellectual property advantages and independent legal person qualification. With registered capital of RMB 50 million, the Company has two subsidiaries-Henan Restar Separation Equipment Technology Co., Ltd We are mainly specialized in R&D, production and service of various intelligent separation and control systems in oil&gas drilling,engineering environmental protection and mining industries.We always take the lead in Chinese market shares of drilling fluid shale shaker for many years. Our products have been exported more than 20 countries and always extensively praised by customers. We are Class I network supplier of Sinopec,CNPC and CNOOC and registered supplier of ONGC, OIL India,KOC. High quality and international standard products make us gain many Large-scale drilling fluids recycling systems for Saudi Aramco and Gazprom projects.

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How to deal with acidic chemical wastewater
Treatment of coking wastewater by using manganese and ...
Treatment of coking wastewater by using manganese and ...

15/9/2009, · ,Under acidic conditions,, a reactor packed with Mn ore demonstrated strong oxidizing capability and destroyed volatile phenols, chemical oxygen demand (COD), and sulfide from the coking wastewater. The effluent was further treated by using Mg ore to remove ammonium-nitrogen and phosphate in the form of magnesium ammonium phosphate (struvite) precipitates.

Wastewater; Industrial effluent and domestic sewage ...
Wastewater; Industrial effluent and domestic sewage ...

Wastewater, generated from residential area is called sewage. Sewage is extremely unpleasant in odor which contains large number of microorganisms, organic matters and other pollutants. Pure domestic sewage consists of discharge from bathroom, toilet, kitchen and laboratories. However sometimes industrial effluent are also ,mixed, with sewage.

Competitive Adsorption Between Phenol Aniline and n ...
Competitive Adsorption Between Phenol Aniline and n ...

Competitive Adsorption Between ,Phenol,, Aniline and n-Heptane in Tailrace ,Coking Wastewater

Treatment Technologies for Organic Wastewater | IntechOpen
Treatment Technologies for Organic Wastewater | IntechOpen

17/11/2011, · The phenol in the wastewater mainly comes from the coking plant, refining, insulation material manufacturing, paper making and phenolic chemical plant. Phenol is known human carcinogen and is of considerable health concern, even at low concentration.

Recycling of Waste Sludge: Preparation and Application of ...
Recycling of Waste Sludge: Preparation and Application of ...

Phenol,: Activation temperature: 550°C; activation time: 30 min; mass ratio of ZnCl 2 solution and ,sludge,: 2 : 1: The surface groups were mainly ,acidic, groups, while the alkaline groups were less, and the choice of zinc chloride as activator was beneficial to the formation of ,acidic, groups. Shanghai east district sewage treatment plant

Advanced treatment of biologically treated coking ...
Advanced treatment of biologically treated coking ...

Recently, advanced oxidation processes (AOPs) have attracted more attention in the post-treatment of ,coking wastewater,. The Fenton reaction is an effective method to remove refractory pollutants in ,coking wastewater,. However, the chemical sludge generation and low pH might limit its application in ,coking wastewater, treatment (Wu et al. 2010).

Degradation of organic pollutants and characteristics of ...
Degradation of organic pollutants and characteristics of ...

The composition of organic compounds in the ,wastewater, was analyzed via gas chromatography - mass spectrometry (GC-MS). The samples were pretreated by CH 2 Cl 2 (Fisher, USA) liquid - liquid extraction and extracted ,under acidic,, neutral, and alkaline conditions using the …

An experimental study on the use of a sequencing-batch ...
An experimental study on the use of a sequencing-batch ...

The use of the SBMBR technique to treat real ,mixed, municipal ,wastewater, is a simple technological process and has a stable effect on nitrogen and phosphorus removal, ... The K/K 0 recovery was better when the time allowed for the membrane module to react with the ,alkaline, and ,acidic, …

Treatment of dinitrodiazophenol industrial wastewater in ...
Treatment of dinitrodiazophenol industrial wastewater in ...

In ,acidic, solution, the removal efficiency of COD at an initial pH of 3.0 was less than that at an initial pH of 7.0, which could result from the additional SO 4 ˙ − generated catalytically by persulfate at excessively rapid speed in ,acidic, solution. 31 As a result, the SO 4 ˙ − concentration was so large that the probability of noneffective collision between free radicals, such as SO 4 ...

A cellulose acetate/ Amygdalus pedunculata shell-derived ...
A cellulose acetate/ Amygdalus pedunculata shell-derived ...

Phenol,, which is difficult to degrade in nature, is a common and highly toxic organic pollutant that is extensively found in ,coking, residues, papers, gases, oil refining wastes and other industrial waste liquids. 19 Human poisoning by ,phenol, is caused mainly through contact with respiratory tract and skin. 20 The low concentration induces protein denaturation, and the high concentration causes protein ,precipitation,…

Exposure and Risk Assessment For Phenol
Exposure and Risk Assessment For Phenol

Phenol, can be degraded in ,wastewater, treatment plants by numerous and diverse processes: through biodegradation in activated sludge and trickling filters (Versar 1979a) and removal by chemical treatment (Versar 1979a). Observations at POTW's demonstrate the success of ,phenol, removal by conventional ,wastewater, treatment. 2.

Coking wastewater treatment by manganese ore oxidation and ...
Coking wastewater treatment by manganese ore oxidation and ...

Download Citation | ,Coking wastewater, treatment by manganese ore oxidation and magnesium ammonium phosphate ,precipitation, | Manganese ore has strong oxidation capabilities ,under acidic, …

A cellulose acetate/ Amygdalus pedunculata shell-derived ...
A cellulose acetate/ Amygdalus pedunculata shell-derived ...

Phenol, which is difficult to degrade in nature, is a common and highly toxic organic pollutant that is extensively found in coking residues, papers, gases, oil refining wastes and other industrial waste liquids. 19 Human poisoning by phenol is caused mainly through contact with respiratory tract and skin. 20 The low concentration induces protein denaturation, and the high concentration causes protein …

Processes | Free Full-Text | Removal of Phenol from ...
Processes | Free Full-Text | Removal of Phenol from ...

Phenol, is often generated in the waste streams of industries such as petrochemicals, oil refining, plastics, steel, textile, paper and pulp, pesticides, pharmaceuticals, synthetic resins, and ,coking, plants [ 1, 2, 3 ]. ,Phenol, is a less biodegradable chemical that can cause cancer, gene mutation and teratogen.

Treatment Technologies for Organic Wastewater | IntechOpen
Treatment Technologies for Organic Wastewater | IntechOpen

17/11/2011, · The ,phenol, in the ,wastewater, mainly comes from the ,coking, plant, refining, insulation material manufacturing, paper making and phenolic chemical plant. ,Phenol, is known human carcinogen and is of considerable health concern, even at low concentration.

Applications of Combined Electrocoagulation and ...
Applications of Combined Electrocoagulation and ...

2/10/2017, · In recent years, it is aimed to reuse ,wastewater, to form an economical input and to manage it sustainably without threatening human life and ecosystem. High pollutant removal yield from wastewaters was achieved using electrocoagulation method without adding any chemical coagulant or flocculants, thus reducing the amount of sludge. However, electrocoagulation (EC) is an inefficient …

Session 13 abstracts | APCChE2019
Session 13 abstracts | APCChE2019

Regarding the wastwwater treatment, Ce(IV) MEO and photocatalytic oxidation systems both have favorable capability in degrading ,phenol under, an ,acidic, environment rather than the DEO system. More importantly, the photo-assisted MEO system offers excellent removal efficiency of ,phenol, up to 98% in only 40 mins, benefiting from the synergistic effect of the individual electrocatalytic and photocatalytic …

Exposure and Risk Assessment For Phenol
Exposure and Risk Assessment For Phenol

Oxygen was supplied by mechanical agitation and about 2.5 kg 02 were con- sumed per kg of ,phenol, at 30°C. In ,wastewater, treatment of ,phenol, by biological methods, pH must be kept between 6 and 9.5; nitrogen and phosphorous nutrient loadings in the range of …

Unit 1. Physical chemical and biological Characteristics ...
Unit 1. Physical chemical and biological Characteristics ...

Wastewater,: is simply that part of the water supply to the community or to the industry which has been used for different purposes and has been ,mixed, with solids either suspended or dissolved. ,Wastewater, is 99.9% water and 0.1% solids. The main task in treating the ,wastewater, is simply to remove most or all of this 0.1% of solids.

Pretreatment of coking wastewater by acid out micro ...
Pretreatment of coking wastewater by acid out micro ...

15/8/2012, · It was worth pointing out that, though the initial pH of the raw, coking wastewater, was on a range of 9.1–9.4 with a high strength of COD and a heavy color, the wastewater firstly underwent a disposal of acid out, that is, 98% sulfuric acid was introduced into the wastewater sample to adjust the effluent pH to the desired level (between 2.0 and 4.0), which could not only provide an acidic …

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