Welcome to the company ! we have many years of professional experience !
rsdgj@pyzyrsd.com +86 513525609655

How to turn acidic chemical wastewater into alkaline water

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.

Certificate of Honor

Get in touch with us

We will confidentially process your data and will not pass it on to a third party.

How to turn acidic chemical wastewater into alkaline water
Efficient Synthesis of α-FeOOH from Pickling Wastewater in ...
Efficient Synthesis of α-FeOOH from Pickling Wastewater in ...

The α-FeOOH crystals synthesized from purified pickling ,wastewater, are not much different from the α-FeOOH crystals synthesized from ,ferrous sulfate,, both of which show acicular particles. Figure 6 a–c shows that the acicular crystals tend to clump together to form agglomerates.

Selenium removal from waste waters by chemical reduction ...
Selenium removal from waste waters by chemical reduction ...

In this study, the fundamental and practical aspects of the selenate reduction by chromous ions as a novel method to remove selenate from waste waters was investigated mainly in ,sulfate, media. At first, the stoichiometry of selenate reduction by chromous ions was studied.

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 ].

Hazardous Waste Disposal Guide – Research Safety
Hazardous Waste Disposal Guide – Research Safety

Liquid wastes 7 ,containing, more than 100mg/L are regulated. List all barium bearing compounds on the chemical waste label. Benzene. Liquid waste 8 ,containing, more than 0.5mg/L are regulated. Bromine Solution Waste. Bromine solutions ,containing, more than 1% bromine must be collected in containers no larger than 1 gal.

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.

Adsorption of chromium on activated carbon
Adsorption of chromium on activated carbon

An anion exchange resin in the chloride or ,sulfate, form is used to exchange chromate ions in the solution to be treated. One of the following reactions may occur depending on the prevailing pH conditions =5 1. In neutral water (2-3) 2. In an ,acidic condition, where dichromate is the species (2-4) 3.

The Complete Guide On Industrial Pollution Control by H ...
The Complete Guide On Industrial Pollution Control by H ...

In research sponsored by the Air Force, it was found that chrome reduction could be accomplished at neutral to slightly alkaline pH using a combination of ,ferrous sulfate, and sodium sulfide as reducing agents and sodium hydroxide for precipitat­ing heavy metals.

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, …

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

17/11/2011, · The advantages of the combined system are as follow: 1) the anaerobic process could get rid of the organic matters and suspended solid from the ,wastewater,, reduce the organic load of the aerobic degradation as well as the production of aerobic sludge, and finally reduce the volume of the reactors; 2) ,wastewater, pretreated by anaerobic technology is more stable, indicating that anaerobic process could reduce the load fluctuation of the ,wastewater,…

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 ].

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.

Subject: MANAGEMENT OF AIRPORT INDUSTRIAL WASTE
Subject: MANAGEMENT OF AIRPORT INDUSTRIAL WASTE

CHROMIUM REDUCTION. Another method of treating chromate wastes is by the reduction of the chromate ion through the addition of ferrous sulfate, followed by neutralization with lime to precipitate heavy metals (see figure 10-2). Normally, batch treatment is used.

Subject: MANAGEMENT OF AIRPORT INDUSTRIAL WASTE
Subject: MANAGEMENT OF AIRPORT INDUSTRIAL WASTE

CHROMIUM, REDUCTION. Another method of treating chromate wastes is by the reduction of the chromate ion through the addition of ,ferrous sulfate,, followed by neutralization with lime to precipitate heavy metals (see figure 10-2). Normally, batch treatment is used.

Hazardous Waste Disposal Guide – Research Safety
Hazardous Waste Disposal Guide – Research Safety

Liquid wastes 7 ,containing, more than 100mg/L are regulated. List all barium bearing compounds on the chemical waste label. Benzene. Liquid waste 8 ,containing, more than 0.5mg/L are regulated. Bromine Solution Waste. Bromine solutions ,containing, more than 1% bromine must be collected in containers no larger than 1 gal.

Chat Online Inquiry Email

Business cooperation

+86 513525609655

Company address

Road West, North Branch, Jingkai Road, Puyang City