Study On Urban Landscape Water Treatment Technology

This thesis primo system has summed up urban landscape water pollution status, cause and the research situation of urban landscape water treatment technology at home and abroad. Have followed the water handling city landscape here on the basis, by analysing, adopt a physical chemistry comparatively for sure, have carried out thorough research take Gui Yang City Nan Ming River as marriage partner together. Have carried out the conceptual design that Nan Ming River water purifies finally.Capital is studied having put science into effect developing a Taoist temple, is accords with the general requirement building the economize on resources type, amicable environment type society and developing circulation economy's, is abides by waste resource-rization make use of, the principle not producing "secondary pollution ". The wave water yield is big, low pollution thickness characteristics such as N and P specifically for landscape such as city lake, reservoir, river, adopt the zeolite adsorption and polymerization chlorinating aluminium(PAC) + polypropylene acidamides (PAM) to drift along curdling to constitute a handicraft, purpose having reached the wave transparency taking off a nitrogen oxidizing except that the phosphorus removes rich camp of wave, fading except confused rise. The dust having carried out the natural zeolite and fine coal mainly composes zeolite (imitation zeolite) adsorption N, the P experiment, adsorption experiment having also carried out Celatom and activated carbon; The adsorption sum drifts along curdling to constitute an experiment. Coagulant PAC may process fabrication from the gangue, clean water afterwards fine coal ash composes a zeolite but is used for agriculture soil directly to ameliorate and increase a fertilizer.The dynamics experiment and the thermodynamics experiment bear fruit indicate an adsorption: (l)Form of powder zeolite adsorption N, the P speed pretty quickly, 30 min retinue reaction is OK to reach balance; (2)Under experiment condition, the Japan imitation zeolite and the natural zeolite takeoff rate to NH3-N are 60.20% and 63.74% respectively. Fine coal ash only has 4.19% to NH3-N takeoff rate, takeoff rate improves 15 times, but amounts to 67.91% but after using microwave to follow the zeolite composing imitation. Activated carbon has the certain adsorption to dislodge an effect; (3)To the organic nitrogen, begins to have faint adsorbing, but desorb very quickly coming out to NH3-N. Celatom is very small to the NH3-N takeoff effect. (4) The natural zeolite to TP removeing rate is 41.67%. The pulverized coal ash only has 8.00% to TP removeing rate, but after microwave the synthesis permutite removeing rate enhancement 5 times, may reach 48.00%. The Japanese permutite, the activated charcoal, the diatomaceous earth contain the phosphorus, this possibly is mixes in the production process. (5)The pulverized coal ash after microwave the synthesis permutite, to NH3-N, TP has the remarkable adsorption. The synthesis best time is 25min, synthesizes the permutite adsorption performance under this condition to be best. (6)The natural zeolite and the pulverized coal ash synthesis zeolite may use Friendly to the NH3-N uniform temperature adsorption curve in the certain density scope to Freundlich adsorb the uniform temperature type and Langmuir adsorbs the uniform temperature type to carry on the fitting.With drifting along curdling, the combination experiment bear fruit indicates an adsorption: (l)The zeolite adsorption and PAC + PAM drift along curdling to constitute a handicraft being able to have boundary effect takeoff landscape water N, P nutrient substance, chroma sum are a turbidity, improve landscape thereby the water transparency, the effect reaching the clear, clear idea of blue water bottom. Adopt the natural zeolite combination handicraft to be 61.2% and 73.7% respectively to average NH3-N takeoff rate. (2)Under experiment condition, the average takeoff rate to TP parts for 77.7% and 83.0%, the turbidity and chroma disappear after drifting along curdling to precipitate 10 mins out; Adopt the combination handicraft washing the queen Japan imitation zeolite to be 91.5% and 92.5% respectively to average NH3-N takeoff rate, the average takeoff rate to TP is 68.8% and 55.0% respectively, the turbidity and chroma disappear after drifting along curdling to precipitate 10 mins out. (3)The imitation zeolite and natural zeolite properties have had the difference, decision to constitute technological conditions diversity. Takeoff rate throws usage affect a factor mainly being a zeolite most when natural zeolite, to the turbidity adding amounts and PAM jump into a add amounts, both have and the notable interaction, the PAC jumping into a adds amounts effect should think mainly from economy angle less. Takeoff rate throws usage affect a factor mainly being a zeolite most when imitation zeolite, to the turbidity adding amounts and PAC jump into a add amounts, both have and the notable interaction, the PAM jumping into a adds amounts effect should think mainly from economy angle less. (4)In actual application, the zeolite jumping into a adds amounts reason landscape water water yield, landscape water NH3-N and TP thickness and requires that the zeolite adsorption function decides, coagulant PAC + PAM dosages reasons throw the turbidity, the water temperature, pH value decision adding zeolite queen water time the thickness reaching, the actual water temperature. (5)Form of powder zeolite's the process adsorbing process requiring that 30 mins control an equilibration, but PAC + PAM drifting along curdles requires that 10 min retinue can make water clear right away. Therefore, the entire combination process flow needs the 40-50min or so time.Therefore, may reach the conclusion studying: Adopt fine coal ash the water composing the zeolite adsorption and PAC + PAM drifting along curdling to constitute a handicraft handling city landscape is that the first step is feasible.