壳聚糖和改性粉煤灰对城市污泥调理作用
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摘要
随着城市城市污水的产生量越来越多,对污水处理过后产生较多的污泥副产物,对于我国城市污水的调理具有较大的影响,因此本文通过对壳聚糖和改性粉煤灰对城市污泥调理作用进行研究,研究结果表明:随着CPAM的投加量的不断增大,污泥比阻呈先减小后增大的趋势,CPAM浓度为0.06%、0.08%、0.10%、时,最佳的投加量为80 mg/L,CPAM浓度为0.15%和0.12%时,最佳的投加量为100 mg/L;pH值在6～8之间时,污泥比阻最小,污泥的脱水效果最佳。PAC和CPAM联合调理时,PAC的最佳投加量为2 g/L,随着CPAM投加量的增大,污泥比阻呈先减小后增大的趋势,CPAM的最佳投加量为60 mg/L;当改性液的投加量为281 ml/kg DS时,污泥的比阻值最低为2.78×10~(12) m/kg,TTF值最小,仅为40.6 s,改性液调理后的污泥比未调理污泥的滤饼含水率低14.5%,脱水率达62.3%。
With the increasing amount of urban urban sewage, more sludge by-products are produced after sewage treatment, which has a great impact on the conditioning of urban sewage in China. Therefore, this paper adopts chitosan and modification. The research on the conditioning effect of municipal sludge by fly ash shows that: With the increasing dosage of CPAM, the specific resistance of sludge decreases first and then increases, and the concentration of CPAM is 0.06 %. 0.08 %, 0.10 %, when the optimal dosage is 80 mg/L, when the concentration of CPAM is 0.15 % and 0.12 %, the optimal dosage is 100 mg/L; when the pH is between 6-8, The specific resistance of the sludge is the smallest, and the dewatering effect of the sludge is the best. When PAC and CPAM were combined, the optimal dosage of PAC was 2 g/L. With the increase of CPAM dosage, the specific resistance of sludge decreased first and then increased, and the optimal dosage of CPAM was increased. It is 60 mg/L; when the dosage of the modified liquid is 281 ml/kg DS, the specific resistance of the sludge is 2.78×10~(12) m/kg, and the TTF value is the smallest, only 40.6 s. The sludge has a moisture content of 14.5 % lower than that of the untreated sludge, and the dewatering rate is 62.3 %.
With the increasing amount of urban urban sewage, more sludge by-products are produced after sewage treatment, which has a great impact on the conditioning of urban sewage in China. Therefore, this paper adopts chitosan and modification. The research on the conditioning effect of municipal sludge by fly ash shows that: With the increasing dosage of CPAM, the specific resistance of sludge decreases first and then increases, and the concentration of CPAM is 0.06 %. 0.08 %, 0.10 %, when the optimal dosage is 80 mg/L, when the concentration of CPAM is 0.15 % and 0.12 %, the optimal dosage is 100 mg/L; when the pH is between 6-8, The specific resistance of the sludge is the smallest, and the dewatering effect of the sludge is the best. When PAC and CPAM were combined, the optimal dosage of PAC was 2 g/L. With the increase of CPAM dosage, the specific resistance of sludge decreased first and then increased, and the optimal dosage of CPAM was increased. It is 60 mg/L; when the dosage of the modified liquid is 281 ml/kg DS, the specific resistance of the sludge is 2.78×10~(12) m/kg, and the TTF value is the smallest, only 40.6 s. The sludge has a moisture content of 14.5 % lower than that of the untreated sludge, and the dewatering rate is 62.3 %.
引文
[1]陈巍.脱硫灰改善污泥脱水性能的机理及用于水泥掺料的研究[D].北京科技大学, 2017.
[2]刘强,陈晓欢,傅金祥,张晓强.粉煤灰与生石灰复合调理剂对市政污泥深度脱水性能的影响[J].环境工程学报, 2015, 9(07):3468-3472.
[3]陈晓欢.基于粉煤灰复合调理剂对污泥脱水性能影响研究[D].沈阳建筑大学, 2015.
[4]程磊.粉煤灰制备调理剂用于生活污泥脱水的试验研究[D].济南大学, 2013.
[5]程磊,于衍真,索宁,高隆隆.粉煤灰在污泥调理中的应用进展[J].中国资源综合利用, 2013, 31(04):37-39.
[6]李阳.改性粉煤灰与微波协同作用下剩余污泥脱水性能与机制的研究[D].安徽建筑大学, 2013.
[7]陈畅亚.壳聚糖—改性粉煤灰联合调理改善污泥脱水性能及机理初探[D].湖南大学, 2013.
[8]岳敏.污泥的粉煤灰调理和污泥陶粒的制备及应用研究[D].山东大学, 2011.
[9]陈畅亚.改性粉煤灰对城市污泥的调理作用及机理分析[D].湖南大学, 2009.
[2]刘强,陈晓欢,傅金祥,张晓强.粉煤灰与生石灰复合调理剂对市政污泥深度脱水性能的影响[J].环境工程学报, 2015, 9(07):3468-3472.
[3]陈晓欢.基于粉煤灰复合调理剂对污泥脱水性能影响研究[D].沈阳建筑大学, 2015.
[4]程磊.粉煤灰制备调理剂用于生活污泥脱水的试验研究[D].济南大学, 2013.
[5]程磊,于衍真,索宁,高隆隆.粉煤灰在污泥调理中的应用进展[J].中国资源综合利用, 2013, 31(04):37-39.
[6]李阳.改性粉煤灰与微波协同作用下剩余污泥脱水性能与机制的研究[D].安徽建筑大学, 2013.
[7]陈畅亚.壳聚糖—改性粉煤灰联合调理改善污泥脱水性能及机理初探[D].湖南大学, 2013.
[8]岳敏.污泥的粉煤灰调理和污泥陶粒的制备及应用研究[D].山东大学, 2011.
[9]陈畅亚.改性粉煤灰对城市污泥的调理作用及机理分析[D].湖南大学, 2009.