[[]] Heavy metal scavengers 
 I. Introduction 
 Heavy metal trapping agent is a simple, liquid, containing two dithiocarbamates of polymer compounds, can quickly complete removal of heavy metal ions in waste water of chemical agents. Trapping agent at room temperature, heavy metals and various metal ions such as wastewater: chromium, nickel, copper, zinc, mercury, manganese, cadmium, tin, vanadium, and the rapid reaction of water-insoluble polymer chelates, and the formation of floc like precipitation, so as to achieve the purpose of removing heavy metal ions. Currently, traditional chemical precipitation can not fully meet the requirements of environmental protection, and heavy metal trapping agent by the relevant units of the trial evidence: a simple approach (chemical precipitation method in the original run directly on device), low cost, can do a variety of heavy metal ions coexist case processing time, you can meet environmental requirements, even if the coexistence of salts of heavy metals in wastewater and complex salts (such as: EDTA, NH3, citric acid, etc.) but will also play a role, and has a thick floc, settling fast, dehydration fast, easy post-processing, less sludge and stable non-toxic, no secondary pollution. 
 First, the characteristics 
 1. Processing method is simple 
 2. Effective removal 
 3. Good flocculation. 
 4. Less stable sludge 
 5. Safe 
 6. Sludge dewatering easy. 
 Second, the new heavy metal precipitant of technical indicators 
 Appearance: straw yellow or transparent liquid 
 Gravity :1.05-1 .2 (30 ℃) 
 PH: 8.0 ~ 11.5 (10% aqueous solution) 
 Active components: ≧ 35% 
 Applicable PH range: 3 to 10 
 Selective; Hg +2> Ag +> Cu +2> Pb +2> Cd +2> Zn +2> Ni +2> Co +2> Cr +3> Fe +2> Mn +2 
 Third, the use of 
 1, adding and mixing 
 ① the heavy metal trapping agent directly added to wastewater containing heavy metal ions in the transient response, the best way is to stir once every 10min; 
 ② For the concentration of heavy metals in wastewater uncertain, to be joined by laboratory experiments to determine the amount. 
 ③ For different concentrations of wastewater containing heavy metal ions, the amount of added heavy metal trapping agent can be automatically controlled by ORP. 
 2, typical of equipment and process 
 1, 2 pre-treatment of water, in order to obtain PH = 8-8.5, PH regulator by adding acid or base 3, redox regulation by heavy metal trapping agent to control the amount of added 4 - 5, flocculant 6, mixing tank residence time 10min 7, pool tank residence time 10min 8, 9 inclined plate sedimentation tanks, sludge 10, reservoir 11, filter 12, the PH control the ultimate pool drain 13, water discharge 
 Packaging: Heavy metal trapping agent of plastic packaging for the net weight 25KG drum. 
 Address: Jiulongpo District Shuinian Village Hensen Chemical Market 1A-9-1A Tel: 86-023-61669621 Mr. Li 15111868811 
 Environmental Protection Technology Co., Ltd. Guangzhou Jie Quan (Head Office) Address: Tianhe District, Guangzhou, Zhongshan Road No. 38, plus Yue Building, Room 1208 Tel: 86-020-82318533 Mr. Li 13580569952