38results about How to "Eliminate the material basis" patented technology

The invention relates to a method for synthesizing multi-element sustained-release compound fertilizer by using magnesium in seawater or bittern water. The multi-element sustained-release compound fertilizer is synthesized by adopting magnesium in seawater or bittern water as a raw material and adding elements such as phosphorus, potassium and the like. The method comprises the steps: inducting reaction, diluting and adjusting the pH, standing precipitating, carrying out the solid-liquid separation, cleaning with clean water and drying. The magnesium ion is recovered by generating the multi-element sustained-release compound fertilizer with lower solubility product, and the recovery rate of the magnesium is higher; and since the magnesium raw material is from the seawater or bittern water,the raw material cost is low, and the economic benefit is good; when the magnesium ion in the seawater or bittern water is recovered, other divalent (including ions higher than divalent) ions can bepartially or completely precipitated, a substance base for forming water scales can be basically eliminated in supernatant formed after the precipitates are separated, so that convenience can be provided for the subsequent treatment; and the separated multi-element sustained-release compound fertilizer contains elements such as phosphorus, potassium, magnesium, calcium and the like, so that the problem that the potassium ion sustained-release effect is poor can be solved.

The invention discloses a method for treating printing-and-dyeing wastewater. The method includes treatment processes of CO2 neutralization, pressurized aluminium powder reduction, hydrolytic acidification, aerobic treatment, biological filtration tower treatment and the like. The treated wastewater can achieve stable up-to-standard discharge.

The invention provides a treatment method of phenol-cyanogen wastewater generated by a coal gas producer. The method comprises the treatment work procedures of filtration, CO2 pressurized aluminum and zinc composite powder reduction under the ultrasonic wave effect, precipitation, hydrolytic acidification, aerobic treatment, biological filtration tower treatment and the like; the treated wastewater can be stably discharged in a standard reaching manner.

The invention discloses a method for treating phenol-cyanogen wastewater produced by a gas generating furnace. The method comprises the following treatment processes: filtering, pressurizing through CO2 and reducing iron and zinc compound powder under the action of ultrasonic, precipitating, performing hydrolytic acidification, performing aerobic treatment, treating by using a biological filter tower, and the like; the treated wastewater can meet standards and be stably discharged.

The invention provides a treatment method of phenol-cyanogen wastewater generated by a coal gas producer. The method comprises the treatment work procedures of filtration, CO2 pressurized iron aluminum and zinc composite powder reduction, precipitation, hydrolytic acidification, aerobic treatment, biological filtration tower treatment and the like; the treated wastewater can be stably discharged in a standard reaching manner.

The invention provides a treatment method of sweet potato alcohol wastewater. The method comprises the work procedures of liquid-solid separation, CO2 pressurization manganese powder reduction, anaerobic treatment, aerobic treatment, biological filtration tower treatment and the like; the treated wastewater can be stably discharged in a standard reaching manner.

The invention provides a treatment method of phenol-cyanogen wastewater generated by a coal gas producer. The method comprises the treatment work procedures of filtration, CO2 pressurization zinc powder reduction under the ultrasonic wave effect, precipitation, hydrolytic acidification, aerobic treatment, biological filtration tower treatment and the like; the treated wastewater can be stably discharged in a standard reaching manner.

The invention relates to a method for treating phenol and cyanide wastewater produced by a gas generation furnace. The method comprises the following steps of filtering, CO2 (carbon dioxide) pressurizing and reduction by iron, aluminum and manganese composite powder, settling, hydrolytic acidification, aeration, biological filter tower and the like. The method has the advantage that the treated wastewater can stably reach standard and then be drained.

The invention provides a treatment method of phenol-cyanogen wastewater generated by a coal gas generation furnace. The treatment method comprises the treatment procedures of filtering, reducing iron-zinc composite powder by pressurizing CO2, precipitating, carrying out hydrolytic acidification, carrying out aerobic treatment, treating by a biological filter tower and the like; and the treated wastewater can be discharged after stably reaching standards.

The invention discloses a treatment method of printing and dyeing wastewater. The treatment method comprises the treatment processes of CO2 neutralization, pressurized manganese-aluminum composite powder reduction, hydrolytic acidification, aerobic treatment, biological filtration tower and the like. The treated wastewater can be discharged by stably reaching a standard.