Lime

The Comparison of Microstructure of Hot Pressed Lime and Salt-lime Bodies after High Temperature Treatment

Phosphorus removal from piggery effluents of varying quality using lime and physico-chemical treatment methods.

The choice of management practices for the treatment of piggery effluent prior to its disposal to waterways or land is governed by the desire to simultaneously minimise the cost of treatment whilst minimising pollution of the environment. Laboratory experiments were conducted to compare the removal of total and total filterable phosphorus (P) (<0.45 microm) from ortho-phosphate solutions or pig...

Lime Kiln Chemistry and Effects on Kiln Operations

A lime kiln is used to convert lime mud into lime for reuse in the causticizing plant of the kraft recovery process. Many of the problems encountered in lime kiln operations can be related to kiln chemistry, including TRS and SO2 emissions, dusting, ringing and refractory brick thinning. Understanding the composition and thermal behaviour of lime mud and the major chemical reactions involved is...

Comparison of Sludge Characteristics between Lime and Limestone/lime Treatment of Acid Mine Drainage

The U.S. Geological Survey, in cooperation with the Colorado School of Mines and the U.S. Environmental Protection Agency, has demonstrated the application of pulsed limestone bed (PLB) treatment of acid mine drainage (AMD) at the Argo tunnel discharge near Idaho Springs, Colorado. Current technology for AMD treatment at the Argo facility is neutralization with lime. However, lime neutralizatio...

Liming in Diffusers: Calcium Saccharate or Milk of Lime?

Liming of diffusers with milk of lime is warranted from a corrosion point of view. It can however cause both physical and chemical problems. The use of calcium saccharate, prepared from lime and mixed juice, as an alternative to milk of lime is suggested and the results from preliminary tests are discussed. The main objective is to investigate whether calcium saccharate could overcome some of t...

The Strategic Use of Liquid Lime in Sludge Treatment

Lime treatment of wastewater sludge has been in use for over a century. This paper describes the use of ‘Liquid Lime’ and hydrated lime suspensions as a sludge treatment process for the specific purpose of agricultural recycling. The introduction of ‘Liquid Lime’ treatment has enabled South West Water to achieve full compliance with the Sludge (Use in Agriculture) Regulations at a time when the...