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

liquid hazardous waste disposal companies

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.

liquid hazardous waste disposal companies
Impact of Virus Aggregation on Inactivation by Peracetic ...
Impact of Virus Aggregation on Inactivation by Peracetic ...

Abstract. Viruses in ,wastewater, and natural environments are often present as aggregates. The disinfectant dose required for their inactivation, however, is typically determined with dispersed viruses. This study investigates how aggregation affects virus inactivation by chemical disinfectants.

Acid rain - Wikipedia
Acid rain - Wikipedia

Acid rain can damage buildings, historic monuments, and statues, especially those made of rocks, such as limestone and marble, that contain large amounts of calcium carbonate. Acids in the rain react with the calcium compounds in the stones to create gypsum, which then flakes off.

Passive co-treatment of acid mine drainage and sewage ...
Passive co-treatment of acid mine drainage and sewage ...

1/12/2013, · In order to investigate a possible regeneration technique and illuminate further treatment possibilities, four replicate columns containing, limestone, overlain with inert biofilm media that had been processing a passively pre-treated mixture of, high-strength acid, mine drainage and raw municipal, wastewater, were pulled offline, kept filled, sealed and incubated.

Treatment of Acid Mine Drainage Using Un- Activated ...
Treatment of Acid Mine Drainage Using Un- Activated ...

Keywords—acid mine drainage, bentonite, limestone, heavy metal removal. I. INTRODUCTION CID mine drainage (AMD) is, a major source of water contamination in coal, and metal mining industries worldwide. This environmental un,friendly phenomenon, results from, draina,ge of water from areas that have been mined for, coal, or other mineral ores.

Adsorption of Anionic Surfactant Presence in Synthetic Car ...
Adsorption of Anionic Surfactant Presence in Synthetic Car ...

19]. This ,phenomenon, was a setback for the oil production industry. However, for the ,wastewater, treatment industry, this occurrence provides idea for the usage of LS in adsorbing AS. ,Limestone, is a widely available sedimentary rock, which composed of minerals calcite and aragonite with a different crystal forms of calcium carbonate (CaCO3).

Explain and describe using a balanced chemical equation ...
Explain and describe using a balanced chemical equation ...

Limestone, is primarily composed of calcium carbonate. This is the calcium salt compound of the carbonate anion, which is a weak diprotic base. A Bronsted ,acid,-base reaction will occur.

Carbonate Crystals Precipitated by Freshwater Bacteria and ...
Carbonate Crystals Precipitated by Freshwater Bacteria and ...

15/9/2009, · Bacterial carbonate precipitation is known to be a natural ,phenomenon, associated with a wide range of bacterial species. Recently, the ability of bacteria to produce carbonates has been studied for its value in the conservation of ,limestone, monuments and concrete.

Carbonate Crystals Precipitated by Freshwater Bacteria and ...
Carbonate Crystals Precipitated by Freshwater Bacteria and ...

Bacterial ,carbonate, precipitation is known to be a natural ,phenomenon, associated with a wide range of bacterial species. Recently, the ability of bacteria to produce carbonates has been studied for its value in the conservation of ,limestone, monuments and concrete.

Acid-enhanced limestone defluoridation in column reactor ...
Acid-enhanced limestone defluoridation in column reactor ...

Acid enhanced limestone defluoridation of water has been studied in a crushed limestone column reactor using oxalic acid (OA).

EFFECT OF NITRITE ON DENITRIFICATION OF WASTEWATER
EFFECT OF NITRITE ON DENITRIFICATION OF WASTEWATER

phenomenon, is called methemoglobinemia (blue baby syndrome). ... However, for example, nitric-,acid, rinsing process ,wastewater,, nitrate-contaminated ground water and nitrified landfill leachate have low organic ... denitrification with sulfur ,and limestone, packed

Removal of Heavy Metals from Acid Mine Drainage: A Review
Removal of Heavy Metals from Acid Mine Drainage: A Review

Fe and Mn by different materials likes concrete, sand, ,limestone,, starfish, and black shale from ,Wastewater, impacted by ,acid, mine drainage. The change in pH, Eh, and EC as a function of time was quantified and found high Neutralization efficiency for AMD and maintained the pH value above11[7].

Resource utilization of pickling wastewater (waste acid)
Resource utilization of pickling wastewater (waste acid)

The commonly used neutralizing agents are limestone, soda, sodium hydroxide, fly ash, etc. The process of lime neutralization + three effect evaporation is adopted. Lime,stone, is used as neutralizing agent to improve the pH value of, waste acid,, forming the coprecipitation of calcium sulfate and metal hydroxide.

Removal of Manganese(II) from Acid Mine Wastewater: A ...
Removal of Manganese(II) from Acid Mine Wastewater: A ...

Acid, mine drainage 3.71 ,Limestone, 2.94 10.0 Room temperature 6 h 93% [42] Artificial solution 155 ,Limestone, 8.3 9.0 23 90 min 99.4% [43] Mine water 16.5 ,Limestone, 16.7 9.0 23 90 min 98.2% [44] Hydroxide precipitation employs pH adjustment to convert heavy …

Simultaneous removal of Fe(II) and Mn(II) from acid mine ...
Simultaneous removal of Fe(II) and Mn(II) from acid mine ...

1/11/2020, · The treatment effect of actual ,wastewater, was slightly inferior to model ,wastewater,. This ,phenomenon, may be caused by competition among the amounts of other ions, such as SO 4 2−, CO 3 2−, HCO 3-, HPO 4 - may result in the precipitation of Ca 2+ in the ,wastewater, that leads passivate of the electrode, and ·OH generated also could be captured by these anions (Ahmadzadeh and Dolatabadi, …

Acid rain - Wikipedia
Acid rain - Wikipedia

Acid rain can damage buildings, historic monuments, and statues, especially those made of rocks, such as ,limestone, and marble, that contain large amounts of calcium carbonate. Acids in the rain react with the calcium compounds in the stones to create gypsum, which then flakes off.

SEMI-BATCH PRECIPITATION OF CALCIUM SULFATE DIHYDRATE …
SEMI-BATCH PRECIPITATION OF CALCIUM SULFATE DIHYDRATE …

the ,acid,’s initial concentration, the stronger this ,phenomenon,. This could possibly explain the increasing discrepancy between the mean particle sizes of the two populations as initial ,acid, concentration decreases (Table 5). Table 5: Mean particle size (µm) of gypsum crystals precipitated at 90°C with various propeller’s

Calcium Aluminate Technology and Biogenic Corrosion ...
Calcium Aluminate Technology and Biogenic Corrosion ...

The byproduct of the bacteria’s digestion process is sulfuric acid. It is this sulfuric acid that is corrosive to ,wastewater, structures, not the H2S gas itself. Factors that can enhance this biogenic corrosion cycle include long retention times, high ambient temperatures, flat terrain, and low flow values.

EFFECT OF NITRITE ON DENITRIFICATION OF WASTEWATER
EFFECT OF NITRITE ON DENITRIFICATION OF WASTEWATER

phenomenon, is called methemoglobinemia (blue baby syndrome). ... However, for example, nitric-acid rinsing process ,wastewater,, nitrate-contaminated ground water and nitrified landfill leachate have low organic ... denitrification with sulfur and ,limestone, packed

Chat Online Inquiry Email

Business cooperation

+86 513525609655

Company address

Road West, North Branch, Jingkai Road, Puyang City