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The wastewater from processing plastic bags is acidic

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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The wastewater from processing plastic bags is acidic
Visible Light Assisted Photocatalytic Degradation of ...
Visible Light Assisted Photocatalytic Degradation of ...

The ,wastewater, sample ,containing, Cr(VI) was introduced with Heber-Immersion type photoreactor. In the test a precisely weighted quantity of photocatalysts was added in the flask, adjusting pH with NaOH and HCl in the different flask at pH 2 to 7. The flask was sited ,under, Heber-Immersion type photoreactor, by steady shaking by magnetic stirrer.

The preparation of a novel iron/manganese binary oxide for ...
The preparation of a novel iron/manganese binary oxide for ...

With ,acidic condition, (pH < 4.81), –OH was easier to be protonated to form –OH 2 +, hence the electrostatic interaction between –OH 2 + and Cr-,containing, anions (HCrO 4 −, CrO 4 2−, HCr 2 O 7 −, and Cr 2 O 7 2−) played an essential role in enhancing the adsorption capacity of Fe–Mn binary oxide adsorbent at pH = 3.

Coatings | Free Full-Text | Influence of Sludge Initial pH ...
Coatings | Free Full-Text | Influence of Sludge Initial pH ...

Therefore, the increase of Fe 2+ and Fe 3+ concentrations is higher under acidic conditions. In the later stage of bioleaching, the concentrations of Fe 2+ and Fe 3+ decreased. The possible reason for this is that the energy substance is largely consumed, the microbial activity deteriorates, and the reaction of Fe 3+ with SO 4 2− generates schwertmannite, which consumes a part of Fe 3+ [ 30 ].

Effluent Treatment Plant Design Operation And Analysis Of ...
Effluent Treatment Plant Design Operation And Analysis Of ...

Wastewaters include ,acidic, rinsewaters together with waste acid. Although many plants operate acid recovery plants,(particularly those using Hydrochloric acid), where the mineral acid is boiled away from theiron salts, there remains a large volume of highly acid ,ferrous sulfate, or ,ferrous, …

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